| 某石油钻井绞车链轮传动轴断裂原因 |
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| 引用本文： | 樊春明,张增年,王德贵,徐虹,王平怀.某石油钻井绞车链轮传动轴断裂原因[J].机械工程材料,2021,45(1):109-112,118. |
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| 作者姓名： | 樊春明 张增年 王德贵 徐虹 王平怀 |
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| 作者单位： | 国家油气钻井装备工程技术研究中心,宝鸡 721002;宝鸡石油机械有限责任公司,宝鸡 721002;中国石油集团川庆钻探工程有限公司,成都 610051;国家油气钻井装备工程技术研究中心,宝鸡 721002;宝鸡石油机械有限责任公司,宝鸡 721002;宝鸡石油机械有限责任公司,宝鸡 721002;宝鸡石油机械有限责任公司,宝鸡 721002 |
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| 基金项目： | "十三五"国家科技重大专项项目 |
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| 摘 要： | 某石油钻井绞车在运行过程中链轮传动轴突然断裂,通过断口形貌观察、化学成分分析、力学性能测试、显微组织观察等方法,研究了链轮传动轴断裂的原因.结果表明:链轮传动轴的断裂属于早期疲劳失效.裂纹在链轮传动轴?210 mm与?200 mm轴台阶处的粗糙过渡圆角根部应力集中处萌生,在交变弯扭应力作用下扩展,最终导致链轮传动轴的疲...
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| 关 键 词： | 链轮传动轴 疲劳断裂 应力集中 MnS夹杂物 带状偏析 |
Fracture Cause of Chain Wheel Drive Shaft in an Oil Drilling Drawwork |
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| FAN Chunming,ZHANG Zengnian,WANG Degui,XU Hong,WANG Pinghuai.Fracture Cause of Chain Wheel Drive Shaft in an Oil Drilling Drawwork[J].Materials For Mechanical Engineering,2021,45(1):109-112,118. |
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| Authors: | FAN Chunming ZHANG Zengnian WANG Degui XU Hong WANG Pinghuai |
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| Affiliation: | (National Engineering Research Center for Oil&Gas Drilling Equipment,Baoji 721002,China;CNPC Baoji Oilfield Machinery Co.,Ltd.,Baoji 721002,China;Chuanqing Drilling Engineering Co.,Ltd.,CNPC,Chengdu 610051,China) |
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| Abstract: | The fracture of chain wheel drive shaft in an oil drilling drawwork during operation ocurred.The reason for fracture of the chain wheel drive shaft was studied by fracture morphology observation,chemical composition analysis,mechanical property test and microstructure observation.The results show that the fracture of chain wheel drive shaft was early fatigue failure.The cracks initiated at the stress concentration of the rough transition fillet root at the step ofф210 mm andф200 mm shafts of the chain wheel drive shaft,and expanded under alternating bending and torsion stresses,leading to the fatigue fracture of the chain wheel drive shaft finally.The existence of lamellar MnS inclusions in the structure and the banded segregation in the core promoted the growth of fatigue cracks. |
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| Keywords: | chain wheel drive shaft fatigue fracture stress concentration MnS inclusion banded segregation |
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